Pulverizer and mixer



I Sept. 22, 1953 A HALL .2,652,983

PULVERIZER AND MIXER Filed Jan. 28, 1952 3 Sheets-Sheet l- 1N VEN TOR Sept. 22, 1953 A, v HALL 2,652,983

PULVERIZER AND MIXER Filed Jan. 28, 1952 5 Sheets-Sheet 2 Tgfi- IN V EN TOR.

Y WSL-Me azys.

sept. 22, 1953 A. L. HALL 4 2,652,983

PULVERIZER AND MIXER Filed Jan. 28, 1952 3 Sheets-Sheet 5 zIg- I `hay i f/4- INVENTOR QZ/.Ha Z Z 9L ATTORNEYS Patented Sept. 22, 1953 UNITED STATES rarest: rric PULVERIZER AND MIXER Arthur L. Hall, Memphis, Tenn Applicationll'anuary 28, 1952, Serial No. 268,578

l 1 clarin. (C1. 241-98) This invention relates to a combined pulverizer and mixer.

An object of this invention is to provide a Combined pulverizer and mixer in the form 'of a rotatable housing with a `plurality of beaters rotatably disposed in the housing with means for rotating the beaters at a speed different than the speed of rotation of the housing.

Another object of this invention is to provide a pulverizer and mixer which is formed of an oblong housing having tapered opposite ends forming receivers adapted to receive the ground material when the device is in a vertical inoperative position.

A further object of this invention is to provide a pulverizer and mixer wherein the beaters or pulverizing blades are adapted to be rotated independently of the rotation of the housing and in either the same or opposite direction,

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and then more particularly pointed out in the appended claim.

In the drawings- Figure 1 is a detailed side elevation of a combined pulverizer and mixer constructed according to an embodiment of this invention,

Figure 2 is a sectional view taken on the line 2 2 of Figure l,

Figure 3 is a plan view of the mixer element,

Figure 4 is a sectional View taken on the line 4-4 of Figure 2,

Figure 5 is a sectional view taken on line 5-5 0f Figure 3, and

Figure 6 is an elevation taken on line 6--3 of Figure 4.

Referring to the drawings, the numeral Ill designates generally a supporting or base frame structure which includes upright supporting legs I I connected together by lower connecting members I2. The legs or supporting members Ii have xed on the upper ends thereof, upper horizontal frame bars I3 which, as shown in Figure l, project substantially beyond at least one end of the frame structure. A housing, generally designated as I4, is rotatably disposed at one end of the frame structure I0 and is formed of a polygonal body I5, which in transverse section is rectangular, and one wall I6 of the 'body I5 is formed with an opening I'I which is closed by means of a closure plate I8. A similar opening and a similar closure means may be formed if desired on the wall of the body opposite to wall I6, thus constituting two openings, one on each side of the drum, for inspecting and cleaning.

The body I5 has extending from the opposite ends thereof tapered funnel shaped members I3 terminating in a cylindrical neck 25 having a cap 2| threadably mounted thereon. The opposite side walls 22 of the body I5 have bearings 23 fixed thereto through which a supporting shaft 24 rotatably engages. The shaft 24 is journaled in bearings 25 carried by the frame bars I3, and one end of the shaft 24 has ixed thereon a grooved pulley 25. One side wall 21 of the body I5 has fixed thereto a ring shaped grooved wheel 28 which is fixed to the wall 2'I by bolts or fastening members 29. An endless belt 3u engages about the pulley or wheel 28 and also engages about a grooved pulley 3l mounted on a shaft 32.

The shaft 32 is journaled in bearings 33 carried by the upper frame bars I3, and shaft 32 also has xed thereon a pulley 34. A speed reducing unit 35 of conventional construction is carried by the frame It rearwardly of the shaft 32, and a shaft 36 constituting a driven shaft eX- tends from the speed reducing unit 35 and has a grooved pulley 3'! fixed thereto. An endless belt 33 is trained about the pulleys 34 and 31.

A power member 39 is carried by the frame I0, and the drive shaft 4D of the power member 39 is coupled to the speed reducing unit 35. Shaft 24 constitutes a beater or blade carrying shaft, and a plurality of beater or pulverizer1 blades 4I are fixed on the shaft 24 within the body I5. The blades 4| are spaced apart by means of spacer sleeves 42, and preferably the blades or beaters 4I are disposed in right angularly disposed pairs, as shown in Figure 5.

A second power member 43 is carried by the frame I0 below the upper bars I3 and includes a driving pulley 44 about which the belt 33 engages. The belt 30 provides a substantially direct coupling between the power member 43 and the beater shaft 24 so that shaft 24 may rotate at a speed substantially greater than the speed of rotation of the housing I4. It will be understood that shaft 24 may rotate either in the same or in the opposite direction relative to the rotation of housing I4.

In the use and operation of this device, the material which is to be pulverized or formed into powder is discharged into the housing I4 with the housing I4 substantially vertical, as shown in Figure 5, at which time the uppermost cap 2l is adapted to be removed. Power member 33 will rotate housing I4 in one direction at a relatively slow speed, whereas power member 43 will rotate beater shaft 24 at a relatively high rate of speed, and the direction of rotation of shaft 24 may be either the same as the direction of the rotation of housing I4 or may be the opposite direction. As the housing I4 rotates, the material will be tumbled from one end to the other, it being understood that the speed of rotation of housing I4 is slow enough to prevent the material from being retained in the tapered ends I9 by centrifugal force.

I do not mean to coni-lne myself to the exact details of construction herein disclosed, but claim all variations falling within the purview of the appended claim.

What is claimed is:

A pulverizer and mixer comprising a base frame, a housing formed of a central body of substantially square cross section and having rectangular sides and tapered substantially four sided pyramidal ends, a cap removably mounted on each end, the sides of said central body forming the bases of the end pyramids, a shaft rotatably carried by said frame passing horizontally through the center portion of said central body and loosely engaging through said frame, whereby the axis of rotation of said body is perpendicular to the length of said housing, a plurality of angles to said shaft.

ARTHUR L. HALL.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 688,096 Journeay Dec. 3, 1901 721,027 Curtis Feb. 17, 1903 1,033,375 Blair July 23, 1912 1,302,294 Bogaerts Apr. 29, 1919 2,018,082 Muench et al Oct. 22, 1935 2,108,502 Muench Feb. l5, 1933 2,267,898 Cornell Dec. 30, 1941 FOREIGN PATENTS Number Country Date 12,473 Sweden May 18, 1901 550,959 France Dec. 23, 1922 

